Candace asked 100 students which crisp flavour they liked best out of ready salted, cheese and onion or salt and vinegar
42 of the students are boys
17 of these boys liked cheese and onion the best
15 girls liked ready salted best.
23 out of the 39 students who like salt and vinegar best are giris.
Work out the number of students who like ready salted best.

The customer price index(cpi), which measures the cost of a typical package of customer goods, was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely. use data points to find such a line and then estimate the requested quantities